6.0.1

Folders
Folders allow you to group objects of the same type so you can easily
manage them. For example, you can use folders to set permissions across
objects, to set alarms across objects, and to organize objects in a meaningful
way.
A folder can contain other folders, or a group of objects of the same type:
data centers, clusters, datastores, networks, virtual machines, templates, or
hosts. For example, one folder can contain hosts and a folder containing
hosts, but it cannot contain hosts and a folder containing virtual machines.
data center folders form a hierarchy directly under the root vCenter Server
and allow users to group their data centers in any convenient way. Within
each data center is one hierarchy of folders with virtual machines and
templates, one with hosts and clusters, one with datastores, and one with
networks.
Hosts
The physical computer on which ESXi is installed. All virtual machines run
on hosts.
Networks
A set of virtual network interface cards (virtual NICs), distributed switches
or vSphere Distributed Switches, and port groups or distributed port groups
that connect virtual machines to each other or to the physical network
outside of the virtual data center. All virtual machines that connect to the
same port group belong to the same network in the virtual environment,
even if they are on dierent physical servers. You can monitor networks and
set permissions and alarms on port groups and distributed port groups.
Resource pools
Resource pools are used to compartmentalize the CPU and memory
resources of a host or cluster. Virtual machines execute in, and draw their
resources from, resource pools. You can create multiple resource pools as
direct children of a standalone host or cluster and then delegate control over
them to other individuals or organizations.
vCenter Server provides, through the DRS components, various options in
monitoring the status of the resources and adjusting or suggesting
adjustments to the virtual machines using the resources. You can monitor
resources and set alarms on them.
Templates
A master copy of a virtual machine that can be used to create and provision
new virtual machines. Templates can have a guest operating system and
application software installed, and can be customized during deployment to
ensure that the new virtual machine has a unique name and network
seings.
Virtual machines
A virtualized computer environment in which a guest operating system and
associated application software can run. Multiple virtual machines can
operate on the same managed host machine concurrently.
vApps
vSphere vApp is a format for packaging and managing applications. A vApp
can contain multiple virtual machines.
Chapter 1 vSphere Concepts and Features
VMware, Inc. 19